| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| SKF | 99121 | Direct Cross Interchange | 3 |
| Precision Seals & Bearings | 99121 | Direct Cross Interchange | 2 |
| DT Components | 99121 | Direct Cross Interchange | 2 |
| CHICAGO RAWHIDE | 99121 | Indirect Cross Interchange | 2 |
| MOOG | 99121 | Indirect Cross Interchange | 1 |
| IHC | CR99121 | Indirect Cross Interchange | 1 |
| PACCAR | 99121CHR | Indirect Cross Interchange | 1 |
| FREIGHTLINER | CHR99121 | Indirect Cross Interchange | 1 |
| NAPA | 99121 | Indirect Cross Interchange | 1 |
| NATIONAL | 99121 | Indirect Cross Interchange | 1 |
| TIMKEN | KWK99121 | Indirect Cross Interchange | 1 |